Re: cool article

Re: cool article

[Ameet Patil]

Thanks Ed! I did get a root fs up and running NOT using JFFS2 though. I 
used ext2.

cheers,
-Ameet

Edward Bockhoefer wrote:
> I found your post about the Virtex II part one at 
> http://www.linux.get2knowmore.com. Thanks for the info. Did you happen 
> to get a root fs up and running using jffs2?
> 
> Best Regards,
> Ed
> 
> 

Re: cool article

[Ameet Patil]

 > Did you happen to get an Ethernet mac going on the virtex2 or
 > virtex4 with the 2.6 kernel?

Nope! :-(
Rumour has it that Montavista is soon going to release the source for 
2.6 kernel to run on Xilinx platforms.

-Ameet

Edward Bockhoefer wrote:
> Hello Ameet,
> I too am working on this type of project. I am trying to get the xilinx 
> obp 10/100 mac driver into the 2.6.17.6 kernel. Unfortantly, I think I 
> need some of the montavista sources not generated by the xilinx 
> software, which only generates driver code for the 2.4 montavista 
> kernel. Did you happen to get an Ethernet mac going on the virtex2 or 
> virtex4 with the 2.6 kernel?
> 
> Ed
> 
> Ameet Patil wrote:
> 
>> Thanks Ed! I did get a root fs up and running NOT using JFFS2 though. 
>> I used ext2.
>>
>> cheers,
>> -Ameet
>>
>> Edward Bockhoefer wrote:
>>
>>> I found your post about the Virtex II part one at 
>>> http://www.linux.get2knowmore.com. Thanks for the info. Did you 
>>> happen to get a root fs up and running using jffs2?
>>>
>>> Best Regards,
>>> Ed
>>>
>>>
>>
> 
> 
> 

Xilinx TEMAC

[David H. Lynch Jr.]

Ameet Patil wrote:
>  > Did you happen to get an Ethernet mac going on the virtex2 or
>  > virtex4 with the 2.6 kernel?
>
> Nope! :-(
> Rumour has it that Montavista is soon going to release the source for 
> 2.6 kernel to run on Xilinx platforms.
>
>   
    I have 2 different TEMAC's working under 2.6 with a V4.

    The MontaVista driver that has been posted on the list that I think
is from MontaVista for the PLB TEMAC with very minor modifications to
get it to work at speeds other than GigaBit.

    A driver I wrote for the LocalLink TEMAC that works limpingly. I
have been unable to figure out how to get a receive interrupt from the
LocalLink TEMAC so receives are polled and performance is poor.
    I have pretty much abandoned work on it  - my client wants the
smallest possible FPGA footprint BUTanother OS I am porting requires
interrupt driven  IO and we are looking for a single minimal hardware
implimentation for all platforms.

    Anyway, if anyone wants the LL TEMAC in its current state I can post it.
    Currently it sends fine. It drops about 50% of all received packets
- but that is probably debugging overhead and poll rate tuning.
   




-- 
Dave Lynch 					  	    DLA Systems
Software Development:  				         Embedded Linux
717.627.3770 	       dhlii@dlasys.net 	  http://www.dlasys.net
fax: 1.253.369.9244 			           Cell: 1.717.587.7774
Over 25 years' experience in platforms, languages, and technologies too numerous to list.

"Any intelligent fool can make things bigger and more complex... It takes a touch of genius - and a lot of courage to move in the opposite direction."
Albert Einstein

Re: Xilinx TEMAC

[Edward Bockhoefer]

Thank you for the reply David,
I have started the montavista 10/100 enet port from the xilinx edk 
generated 2.4 driver to the 2.6 driver. Unfortunately, I can't post the 
driver port publicly because it's not GLP'd, as far as I know. We only 
needed a 10/100 mac, so we didn't bother with a TEMAC. I got the obp and 
enet directories to compile but I crash on link with an undefined reference:

**********************************************
[root@bockhoefer linux-2.6.17.6]# make
  CHK     include/linux/version.h
  CHK     include/linux/compile.h
  GEN     .version
  CHK     include/linux/compile.h
  UPD     include/linux/compile.h
  CC      init/version.o
  LD      init/built-in.o
  LD      .tmp_vmlinux1
drivers/built-in.o(.init.text+0x246c): In function `fbcon_bmove':
drivers/video/console/fbcon.c:1887: undefined reference to `init_etherdev'
make: *** [.tmp_vmlinux1] Error 1
[root@bockhoefer linux-2.6.17.6]#     

*********************************************
I will work on this more today. If you want to send me your TEMAC code, 
please do so. I can always use the reference.

-- 
Best Regards,

Edward Bockhoefer
Data Design Corporation
7851-A Beechcraft Ave.
Gaithersburg, MD 20879
Ph: 301-670-1157 ext 36
Fax: 301-926-6441 



David H. Lynch Jr. wrote:

>Ameet Patil wrote:
>  
>
>> > Did you happen to get an Ethernet mac going on the virtex2 or
>> > virtex4 with the 2.6 kernel?
>>
>>Nope! :-(
>>Rumour has it that Montavista is soon going to release the source for 
>>2.6 kernel to run on Xilinx platforms.
>>
>>  
>>    
>>
>    I have 2 different TEMAC's working under 2.6 with a V4.
>
>    The MontaVista driver that has been posted on the list that I think
>is from MontaVista for the PLB TEMAC with very minor modifications to
>get it to work at speeds other than GigaBit.
>
>    A driver I wrote for the LocalLink TEMAC that works limpingly. I
>have been unable to figure out how to get a receive interrupt from the
>LocalLink TEMAC so receives are polled and performance is poor.
>    I have pretty much abandoned work on it  - my client wants the
>smallest possible FPGA footprint BUTanother OS I am porting requires
>interrupt driven  IO and we are looking for a single minimal hardware
>implimentation for all platforms.
>
>    Anyway, if anyone wants the LL TEMAC in its current state I can post it.
>    Currently it sends fine. It drops about 50% of all received packets
>- but that is probably debugging overhead and poll rate tuning.
>   
>
>
>
>
>  
>

Re: Xilinx TEMAC

[Frank D Lombardo]

David H. Lynch Jr. wrote:
> Ameet Patil wrote:
>   
>>  > Did you happen to get an Ethernet mac going on the virtex2 or
>>  > virtex4 with the 2.6 kernel?
>>
>> Nope! :-(
>> Rumour has it that Montavista is soon going to release the source for 
>> 2.6 kernel to run on Xilinx platforms.
>>
>>   
>>     
>     I have 2 different TEMAC's working under 2.6 with a V4.
>
>     The MontaVista driver that has been posted on the list that I think
> is from MontaVista for the PLB TEMAC with very minor modifications to
> get it to work at speeds other than GigaBit.
>
>     A driver I wrote for the LocalLink TEMAC that works limpingly. I
> have been unable to figure out how to get a receive interrupt from the
> LocalLink TEMAC so receives are polled and performance is poor.
>     I have pretty much abandoned work on it  - my client wants the
> smallest possible FPGA footprint BUTanother OS I am porting requires
> interrupt driven  IO and we are looking for a single minimal hardware
> implimentation for all platforms.
>
>     Anyway, if anyone wants the LL TEMAC in its current state I can post it.
>     Currently it sends fine. It drops about 50% of all received packets
> - but that is probably debugging overhead and poll rate tuning.
>    
>
>
>
>
>   
I would be interested looking at the LL TEMAC patch. Hopefully I can 
pick up where you left off. We would require an interrupt driven TEMAC